11913603 has 8 divisors (see below), whose sum is σ = 17106768. Its totient is φ = 7331424.

The previous prime is 11913581. The next prime is 11913611. The reversal of 11913603 is 30631911.

11913603 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11913603 - 2⁸ = 11913347 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11912603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152700 + ... + 152777.

It is an arithmetic number, because the mean of its divisors is an integer number (2138346).

Almost surely, 2^11913603 is an apocalyptic number.

11913603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11913603 is a deficient number, since it is larger than the sum of its proper divisors (5193165).

11913603 is a wasteful number, since it uses less digits than its factorization.

11913603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305493.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 11913603 is about 3451.6087553487. The cubic root of 11913603 is about 228.3920808338.

The spelling of 11913603 in words is "eleven million, nine hundred thirteen thousand, six hundred three".